/*
* format - jQuery plugin to pretty-print or minify text in XML, JSON, CSS and SQL formats.
* https://github.com/zachofalltrades/jquery.format
*
* Version - 0.1
* Copyright (c) 2013 Zach Shelton
* http://zachofalltrades.net
*
* Based on vkbeautify by Vadim Kiryukhin
* http://www.eslinstructor.net/vkbeautify/
*
* Dual licensed under the MIT and GPL licenses:
*   http://www.opensource.org/licenses/mit-license.php
*   http://www.gnu.org/licenses/gpl.html
*
*/
(function( $ ) {

    /**
     * utility function called from constructor of Formatter
     */
    function createShiftArr(step) {
        var space = '    ';
        if ( isNaN(parseInt(step)) ) {  // argument is string
            space = step;
        } else { // argument is integer
            space = new Array(step + 1).join(' '); //space is result of join (a string), not an array
        }
        var shift = ['\n']; // array of shifts
        for(var ix=0;ix<100;ix++){
            shift.push(shift[ix]+space);
        }
        return shift;
    };

    /**
     *
     */
    function isSubquery(str, parenthesisLevel) {
        return  parenthesisLevel - (str.replace(/\(/g,'').length - str.replace(/\)/g,'').length );
    };

    /**
     *
     */
    function split_sql(str, tab) {
        return str.replace(/\s{1,}/g," ")
            .replace(/ AND /ig,"~::~"+tab+tab+"AND ")
            .replace(/ BETWEEN /ig,"~::~"+tab+"BETWEEN ")
            .replace(/ CASE /ig,"~::~"+tab+"CASE ")
            .replace(/ ELSE /ig,"~::~"+tab+"ELSE ")
            .replace(/ END /ig,"~::~"+tab+"END ")
            .replace(/ FROM /ig,"~::~FROM ")
            .replace(/ GROUP\s{1,}BY/ig,"~::~GROUP BY ")
            .replace(/ HAVING /ig,"~::~HAVING ")
            //.replace(/ SET /ig," SET~::~")
            .replace(/ IN /ig," IN ")
            .replace(/ JOIN /ig,"~::~JOIN ")
            .replace(/ CROSS~::~{1,}JOIN /ig,"~::~CROSS JOIN ")
            .replace(/ INNER~::~{1,}JOIN /ig,"~::~INNER JOIN ")
            .replace(/ LEFT~::~{1,}JOIN /ig,"~::~LEFT JOIN ")
            .replace(/ RIGHT~::~{1,}JOIN /ig,"~::~RIGHT JOIN ")
            .replace(/ ON /ig,"~::~"+tab+"ON ")
            .replace(/ OR /ig,"~::~"+tab+tab+"OR ")
            .replace(/ ORDER\s{1,}BY/ig,"~::~ORDER BY ")
            .replace(/ OVER /ig,"~::~"+tab+"OVER ")
            .replace(/\(\s{0,}SELECT /ig,"~::~(SELECT ")
            .replace(/\)\s{0,}SELECT /ig,")~::~SELECT ")
            .replace(/ THEN /ig," THEN~::~"+tab+"")
            .replace(/ UNION /ig,"~::~UNION~::~")
            .replace(/ USING /ig,"~::~USING ")
            .replace(/ WHEN /ig,"~::~"+tab+"WHEN ")
            .replace(/ WHERE /ig,"~::~WHERE ")
            .replace(/ WITH /ig,"~::~WITH ")
            //.replace(/\,\s{0,}\(/ig,",~::~( ")
            //.replace(/\,/ig,",~::~"+tab+tab+"")
            .replace(/ ALL /ig," ALL ")
            .replace(/ AS /ig," AS ")
            .replace(/ ASC /ig," ASC ")
            .replace(/ DESC /ig," DESC ")
            .replace(/ DISTINCT /ig," DISTINCT ")
            .replace(/ EXISTS /ig," EXISTS ")
            .replace(/ NOT /ig," NOT ")
            .replace(/ NULL /ig," NULL ")
            .replace(/ LIKE /ig," LIKE ")
            .replace(/\s{0,}SELECT /ig,"SELECT ")
            .replace(/\s{0,}UPDATE /ig,"UPDATE ")
            .replace(/ SET /ig," SET ")
            .replace(/~::~{1,}/g,"~::~")
            .split('~::~');
    };


    var Formatter = function (options) {
        this.init(options);
        //TODO - if options object maps any functions, add them as appropriately named methods
        var methodName = this.options.method;
        if (!$.isFunction(this[methodName])) {
            $.error("'" + methodName + "' is not a Formatter method.");
        };
        this.format = function(text) { //alias to currently selected method
            return this[this.options.method].call(this, text);
        };
    };


    /**
     * putting the methods into the prototype instead of the constructor method
     * enables more efficient on-the-fly creation of Formatter instances
     */
    Formatter.prototype = {
        options: {},

        init: function(options) {
            this.options = $.extend({}, $.fn.format.defaults, options);
            this.step = this.options.step;
            this.preserveComments = this.options.preserveComments;
            this.shift = createShiftArr(this.step);
        },

        xml: function(text) {
            var ar = text.replace(/>\s{0,}</g,"><")
                    .replace(/</g,"~::~<")
                    .replace(/\s*xmlns\:/g,"~::~xmlns:")
                    .replace(/\s*xmlns\=/g,"~::~xmlns=")
                    .split('~::~'),
                len = ar.length,
                inComment = false,
                deep = 0,
                str = '',
                ix = 0;

            for(ix=0;ix<len;ix++) {
                // start comment or <![CDATA[...]]> or <!DOCTYPE //
                if(ar[ix].search(/<!/) > -1) {
                    str += this.shift[deep]+ar[ix];
                    inComment = true;
                    // end comment  or <![CDATA[...]]> //
                    if(ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1 || ar[ix].search(/!DOCTYPE/) > -1 ) {
                        inComment = false;
                    }
                } else
                // end comment  or <![CDATA[...]]> //
                if(ar[ix].search(/-->/) > -1 || ar[ix].search(/\]>/) > -1) {
                    str += ar[ix];
                    inComment = false;
                } else
                // <elm></elm> //
                if( /^<\w/.exec(ar[ix-1]) && /^<\/\w/.exec(ar[ix]) &&
                    /^<[\w:\-\.\,]+/.exec(ar[ix-1]) == /^<\/[\w:\-\.\,]+/.exec(ar[ix])[0].replace('/','')) {
                    str += ar[ix];
                    if(!inComment) deep--;
                } else
                // <elm> //
                if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) == -1 && ar[ix].search(/\/>/) == -1 ) {
                    str = !inComment ? str += this.shift[deep++]+ar[ix] : str += ar[ix];
                } else
                // <elm>...</elm> //
                if(ar[ix].search(/<\w/) > -1 && ar[ix].search(/<\//) > -1) {
                    str = !inComment ? str += this.shift[deep]+ar[ix] : str += ar[ix];
                } else
                // </elm> //
                if(ar[ix].search(/<\//) > -1) {
                    str = !inComment ? str += this.shift[--deep]+ar[ix] : str += ar[ix];
                } else
                // <elm/> //
                if(ar[ix].search(/\/>/) > -1 ) {
                    str = !inComment ? str += this.shift[deep]+ar[ix] : str += ar[ix];
                } else
                // <? xml ... ?> //
                if(ar[ix].search(/<\?/) > -1) {
                    str += this.shift[deep]+ar[ix];
                } else
                // xmlns //
                if( ar[ix].search(/xmlns\:/) > -1  || ar[ix].search(/xmlns\=/) > -1) {
                    str += this.shift[deep]+ar[ix];
                }

                else {
                    str += ar[ix];
                }
            }

            return  (str[0] == '\n') ? str.slice(1) : str;
        },

        xmlmin: function(text) {
            var str = this.preserveComments ? text
                : text.replace(/\<![ \r\n\t]*(--([^\-]|[\r\n]|-[^\-])*--[ \r\n\t]*)\>/g,"")
                    .replace(/[ \r\n\t]{1,}xmlns/g, ' xmlns');
            return  str.replace(/>\s{0,}</g,"><");
        },

        json: function(text) {
            if ( typeof JSON === 'undefined' ) return text;
            if ( typeof text === "string" ) {
                return JSON.stringify(JSON.parse(text), null, this.step);
            }
            if ( typeof text === "object" ) {
                return JSON.stringify(text, null, this.step);
            }
            return text; // text is not string nor object
        },

        jsonmin: function(text) {
            if (typeof JSON === 'undefined' ) {
                return text;
            }
            return JSON.stringify(JSON.parse(text), null, 0);
        },

        css: function(text) {
            var ar = text.replace(/\s{1,}/g,' ')
                    .replace(/\{/g,"{~::~")
                    .replace(/\}/g,"~::~}~::~")
                    .replace(/\;/g,";~::~")
                    .replace(/\/\*/g,"~::~/*")
                    .replace(/\*\//g,"*/~::~")
                    .replace(/~::~\s{0,}~::~/g,"~::~")
                    .split('~::~'),
                len = ar.length,
                deep = 0,
                str = '',
                ix = 0;

            for(ix=0;ix<len;ix++) {

                if( /\{/.exec(ar[ix]))  {
                    str += this.shift[deep++]+ar[ix];
                } else
                if( /\}/.exec(ar[ix]))  {
                    str += this.shift[--deep]+ar[ix];
                } else
                if( /\*\\/.exec(ar[ix]))  {
                    str += this.shift[deep]+ar[ix];
                }
                else {
                    str += this.shift[deep]+ar[ix];
                }
            }
            return str.replace(/^\n{1,}/,'');
        },

        cssmin: function(text) {
            var str = this.preserveComments ? text : text.replace(/\/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+\//g,"") ;
            return str.replace(/\s{1,}/g,' ')
                .replace(/\{\s{1,}/g,"{")
                .replace(/\}\s{1,}/g,"}")
                .replace(/\;\s{1,}/g,";")
                .replace(/\/\*\s{1,}/g,"/*")
                .replace(/\*\/\s{1,}/g,"*/");
        },

        sql: function(text) {

            var ar_by_quote = text.replace(/\s{1,}/g," ")
                    .replace(/\'/ig,"~::~\'")
                    .split('~::~'),
                len = ar_by_quote.length,
                ar = [],
                deep = 0,
                tab = this.step,//+this.step,
                parenthesisLevel = 0,
                str = '',
                ix = 0;

            for(ix=0;ix<len;ix++) {
                if(ix%2) {
                    ar = ar.concat(ar_by_quote[ix]);
                } else {
                    ar = ar.concat(split_sql(ar_by_quote[ix], tab) );
                }
            }

            len = ar.length;
            for(ix=0;ix<len;ix++) {

                parenthesisLevel = isSubquery(ar[ix], parenthesisLevel);

                if( /\s{0,}\s{0,}SELECT\s{0,}/.exec(ar[ix]))  {
                    ar[ix] = ar[ix].replace(/\,/g,",\n"+tab+tab+"");
                }

                if( /\s{0,}\s{0,}SET\s{0,}/.exec(ar[ix]))  {
                    ar[ix] = ar[ix].replace(/\,/g,",\n"+tab+tab+"");
                }

                if( /\s{0,}\(\s{0,}SELECT\s{0,}/.exec(ar[ix]))  {
                    deep++;
                    str += this.shift[deep]+ar[ix];
                } else
                if( /\'/.exec(ar[ix]) )  {
                    if(parenthesisLevel<1 && deep) {
                        deep--;
                    }
                    str += ar[ix];
                }
                else  {
                    str += this.shift[deep]+ar[ix];
                    if(parenthesisLevel<1 && deep) {
                        deep--;
                    }
                }
            }
            str = str.replace(/^\n{1,}/,'').replace(/\n{1,}/g,"\n");
            return str;
        },

        sqlmin: function(text) {
            return text.replace(/\s{1,}/g," ").replace(/\s{1,}\(/,"(").replace(/\s{1,}\)/,")");
        }

    };//end Formatter.prototype


    /**
     * DOM chaining version
     */
    $.fn.format = function(options) {
        var fmt = new Formatter(options);
//		var methodName = fmt.options.method;
//		if (!$.isFunction(fmt[methodName])) {
//			$.error("'" + methodName + "' is not a Formatter method.")
//		};
//		console.log("call " + methodName + " on " + $.type(this));
//		console.log(this);
        return this.each(function() {
//			console.log($.type(this));
//			console.log(this);
            var node = $(this);
//			console.log($.type(node));
//			console.log(node);
            var text = node.val();
//			console.log("text ==>\n" + text);
            text = fmt.format(text);
            node.val(text);
        });
    };

    /**
     * utility version
     */
    $.format = function(text, options) {
        var fmt = new Formatter(options);
//		var methodName = fmt.options.method;
//		if (!$.isFunction(fmt[methodName])) {
//			$.error("'" + methodName + "' is not a Formatter method.")
//		};
//		console.log("call " + methodName + " on " + $.type(text));
//		console.log(text);
//		return fmt[methodName].call(fmt, text);
        return fmt.format(text);
    };

    /**
     * default configuration
     */
    $.fn.format.defaults = {
        method: 'xml', // the method to be called
        step: '    ', // 4 spaces
        preserveComments: false //applies to cssmin and xmlmin functions
    };


})(jQuery);
